- Jul 1 Donald Thomas, Bahamian high jumper (World Championship gold 2007), born in Freeport, Bahamas
- Jul 2 Elise Stefanik, American politician (Rep-R-NY 2021-), born in Albany, New York
- Jul 2 Johnny Weir, American figure skater (World Junior C'ships gold men's singles 2001; World C'ship bronze 2008) and broadcaster (NBC), born in Coatesville, Pennsylvania
- Jul 2 Maarten Martens, Belgian footballer and coach (AZ Alkmaar), born in Eeklo, Belgium
- Jul 2 Vanessa Lee Chester, American actress, known for "The Lost World: Jurassic Park", born in Brooklyn, New York
- Jul 3 Syed Rasel, Bangladeshi cricket swing bowler (6 Tests, 12 wickets; 52 ODIs, 61 wickets; Duronto Rajshahi), born in Jessore, Bangladesh
- Jul 4 Akanishi Jin, Japanese singer, born in Tokyo, Japan
- Jul 4 Gina Glocksen, American singer, born in Tinley Park, Illinois
- Jul 5 Yu Yamada, Ryukyuan model, actress and singer, born in Okinawa, Japan
- Jul 6 Lauren Harris, British rock singer, born in Essex, England
- Jul 7 Marie-Mai [Bouchard], French Canadian pop singer ("Jamais trop tard"), born in Varennes, Quebec
- Jul 7 Minas Alozidis, Greek-Cypriot hurdler
- Jul 7 Mohammad Ashraful, Bangladeshi cricketer, born in Brahmanbaria, Bangladesh
- Jul 9 Jacob Hoggard, Canadian singer (Hedley), born in Surrey, British Columbia
- Jul 10 Maria Julia Mantilla, Peruvian dancer and beauty contestant who won Miss World 2004, born in Trujillo, Peru
- Jul 11 Rachael Taylor, Australian actress (Jessica Jones), born in Launceston, Tasmania
- Jul 11 Tanith Belbin White, Canadian-American ice dancer and TV commentator, born in Kingston, Ontario
- Jul 11 Yorman Bazardo, Venezuelan MLB player (Detroit Tigers), born in Maracay, Venezuela
- Jul 12 Gareth Gates, British singer-songwriter, born in Bradford, England
- Jul 12 Jack Conte, American entrepreneur (co-founder of Patreon), and singer-songwriter (Pomplamoose), born in San Francisco, California
- Jul 12 Michael McGovern, Irish soccer goalkeeper (32 caps Northern Ireland; Ross County, Falkirk, Hamilton Academical, Norwich City), born in Enniskillen, Northern Ireland
- Jul 13 Faf du Plessis, South African cricket batsman, captain (69 Tests, 10 x 100, HS 199; 143 ODIs; Northerns CC, Lancashire CCC, Kent CCC + 3 x IPL teams), born in Pretoria, South Africa
- Jul 14 Chris Steele, Canadian rock bassist, (Alexisonfire), born in St. Catharines, Ontario
- Jul 15 Vice Cooler, American musician, born in Mobile, Alabama
- Jul 16 Hayanari Shimoda, Japanese racing driver, born in Tokyo
- Jul 16 Katrina Kaif, Indian actress (Dhoom 3), born in Hong Kong
- Jul 17 Asami Kimura, Japanese singer (Country Musume), born in Hokkaido, Japan
- Jul 17 Sotiris Leontiou, Greek footballer, born in Ioannina, Greece
- Jul 19 Alessandra De Rossi, Filipino actress (Amanda), born in England
- Jul 19 Holly Roffey, English youngest heart transplant (d. 1984)
- Jul 19 Lasse Gjertsen, Norwegian animator (YouTube - Amateur), born in Larvik, Norway
- Jul 19 Lewis Price, Welsh soccer goalkeeper (11 caps; Ipswich Town), born in Bournemouth, England
- Jul 20 Alexi Casilla, Dominican MLB player, born in San Cristóbal, Dominican Republic
- Jul 20 Troy Smith, American football quarterback (Heisman Trophy 2006, Ohio State; NFL: Baltimore Ravens, San Francisco 49ers), born in Columbus, Ohio
- Jul 21 Liam Ridgewell, English footballer, born in Bexleyheath, England
- Jul 22 Stewart Downing, English footballer (Middlesborough), born in Middlesborough, England
- Jul 23 Brandon Roy, American basketball point guard (NBA All-Star 2008, 09, 10; NBA Rookie of the Year 2007; Portland Trail Blazers), born in Seattle, Washington
- Jul 24 John Dhani Lennevald, Swedish pop singer (A-Teens), born in Stockholm
- Jul 24 Sarah Greene, Irish stage and screen actress (The Cripple of Inishmaan; Penny Dreadful; Ransom - "Maxine"), born in Cork, Ireland
- Jul 25 Loukas Mavrokefalidis, Greek basketball player, born in Jeseník, Czechoslovakia
- Jul 26 Kyriakos Ioannou, Cypriot high jumper, born in Limassol, Cyprus
- Jul 28 Ali Kreiger, American footballer (Orlando pride), born in Dumfries, Virginia
- Jul 28 DeMeco Ryans, American football player, born in Bessemer, Alabama
- Jul 28 John David Washington, American football player and actor (BlacKkKlansman), born in Los Angeles, California
- Jul 28 Zach Parise, American ice hockey player, born in Minneapolis, Minnesota
- Jul 29 Chad Billingsley, American MLB player (Los Angeles Dodgers), born in Defiance, Ohio
- Jul 30 Gabrielle Christian, American actress, born in Washington, D.C.
- Jul 30 Gina Rodriguez, American actress (Jane the Virgin), born in Chicago, Illinois
- Jul 30 Kevin Pittsnogle, American basketball player, born in Martinsburg, West Virginia
About July 1984
How Old? 39 or 40 years old
Generation: Millennial
Leap Year: Yes
20-29
30-39
40-49
50-59
80-89
Over 90